/Engine/Plugins/Runtime/NetworkPrediction/Source/NetworkPrediction/Public/NetworkPredictionCues.h
Window for replicating a NetSimCue. That is, after a cue is invoked, it has ReplicationWindow time before it will be pruned. If a client does not get a net update for the sim in this window, they will miss the event.
static constexpr int32 ReplicationWindowMS()